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Utilizing waste compost to improve the atmospheric CO
Gourisankar Pradhan1, Ram Swaroop Meena1
1Department of Agronomy, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, UP 221 005, India.
The Science of the Total Environment
|June 9, 2023
Summary
This study demonstrates that using compost from industrial waste in wheat-rice cropping sequences significantly boosts grain yield and carbon sequestration. This approach conserves energy, reduces greenhouse gas emissions, and enhances agricultural sustainability for a green economy.
Area of Science:
- Agricultural Science
- Environmental Science
- Waste Management
Background:
- Industrial waste management is a critical environmental challenge.
- Reducing chemical fertilizer use in agriculture is essential for sustainability.
- Improving carbon sequestration and energy efficiency in cropping systems is a global priority.
Purpose of the Study:
- To develop a module for utilizing industrial waste compost in crop cultivation.
- To assess the impact of compost application on energy conservation, fertilizer reduction, and greenhouse gas (GHG) emissions.
- To evaluate the potential for enhanced atmospheric CO2 capture in agriculture for a green economy.
Main Methods:
- Field experiment conducted using a wheat-rice cropping sequence.
- Application of different treatments including industrial waste compost (CW + TV) and conventional practices (B + PS).
- Statistical analysis including correlation, regression, and principal component analysis (PCA) to evaluate yield, carbon sequestration, energy parameters, and carbon footprints.
Main Results:
- The NS3 treatment resulted in a 50.1% increase in grain yield and a 41.8% increase in total CO2 sequestration compared to NS0.
- The CW + TV treatment showed significantly higher grain yield, total CO2 sequestration, and total energy output compared to B + PS.
- The NS3 × CW + TV interaction maximized total CO2 sequestration (47.5 Mg ha-1) and C credit, while reducing carbon footprints by 27.9%.
Conclusions:
- Industrial waste compost can be safely and effectively utilized in agriculture to enhance crop productivity and carbon sequestration.
- The developed module offers a sustainable solution for waste management, energy conservation, and reduced GHG emissions in agriculture.
- This approach contributes to a green economy by improving agricultural sustainability and atmospheric CO2 capture.
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